Heavy Metal Uptake and Detoxification Mechanisms in Plants
نویسندگان
چکیده
منابع مشابه
Foliar heavy metal uptake, toxicity and detoxification in plants: A comparison of foliar and root metal uptake.
Anthropologic activities have transformed global biogeochemical cycling of heavy metals by emitting considerable quantities of these metals into the atmosphere from diverse sources. In spite of substantial and progressive developments in industrial processes and techniques to reduce environmental emissions, atmospheric contamination by toxic heavy metals and associated ecological and health ris...
متن کاملHeavy Metal Detoxification in Plants: Phytochelatin Biosynthesis and Function
Plants have evolved an extensive suite of adaptive responses to heavy metal toxicity. These include the immobilisation, exclusion, chelation and compartmentalisation of metal ions and often involve metal-binding ligands. A number of such ligands have been identified in plants and include organic acids, amino acids, peptides and polypeptides. Polypeptides include the metallothioneins (MTs), smal...
متن کاملCellular mechanisms for heavy metal detoxification and tolerance.
Heavy metals such as Cu and Zn are essential for normal plant growth, although elevated concentrations of both essential and non-essential metals can result in growth inhibition and toxicity symptoms. Plants possess a range of potential cellular mechanisms that may be involved in the detoxification of heavy metals and thus tolerance to metal stress. These include roles for the following: for my...
متن کاملHerbs and Heavy Metal Detoxification
Heavy metals are metallic elements which have a high atomic weight and a density much greater (at least 5 times) than water. There are more than 20 heavy metals, but four are of particular concern to human health: lead (Pb), cadmium (Cd), mercury (Hg) and inorganic arsenic (As). According to the US Agency for Toxic Substances and Disease Registry, these four heavy metals are four of the top six...
متن کاملLead uptake, toxicity, and detoxification in plants.
Lead has gained considerable attention as a persistent toxic pollutant of concern,partly because it has been prominent in the debate concerning the growing anthropogenic pressure on the environment. The purpose of this review is to describe how plants take lead up and to link such uptake to the ecotoxicity of lead in plants.Moreover, we address the mechanisms by which plants or plant systems de...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Agricultural Research
سال: 2006
ISSN: 1816-4897
DOI: 10.3923/ijar.2006.122.141